Electric switch.



C. E ANDERSON. ELECTRIC SWITCH, APPLICATION FILED MAY 29. 1915.

M; 9mm Patented Aug. 29,1916.

CARL ERIC ANDERSON, 0F BRIDGEPOBT, CONNECTICUT, ASSIGNOR TO THE PERKINS ELECTRIC SWITCH MANUFACTURINC COMPANY, OF BRIDGE-PORT, CONNECTICUT, A.

CORPORATION OF CONNECTICUT.

ELECTRIC SWITCH.

Specification of Letters Patent. Patented Aug. 239, ll llti.

Application filed May 29, 1915. Serial No. 31,165. I

.To all whom it may concern:

-Be it known that I, CARL ERIC ANDERSON, a citizen of the United States of America, and residing at Bridgeport, in the county of Fairfield and State of Connecticut, have invented certain new and useful Improvements in Electric Switches, of which the following is a. specification.

My invention relates to electric switches and particularly to push button switches, the object of my invention being to provide an improved mechanism of efficient and at the same time very cheap construction, together with a receptacle of suitable shape to receive-and cooperate with the switch mech-' anism.

In the accompanying drawings, Figure 1 is a plan of a push button switch in which my improved mechanism is embodied in one form; Fig. 2 is a cross section on the line 2--2, Fig. 1, but showing the switch mechanism in elevation; Fig.3 is a longitudinal section on the line 3-3, Fig. 1, likewise showing the switch mechanism in elevation; Fig. 4 is a perspective of the switch mechanism apart from the switch body; Fig. 5 is a broken perspective of one end of the 7 switch body; Fig. 6 is a detached perspective of the switch frame and oscillating switch bar; and Fig. 7 is a detached perspective of the rocker bar, push buttons,

switch spring and a guide for thelatter.

In the form here shown the switch comprises an insulated cup-shaped body 10 the interior of which forms the switch chamber 11 which may be closed at the top, after the insertion of the switch mechanism, by a sheet 12 of insulation resting on ledge supports 13. A yoke 14 of ordinary construction overlies the insulating sheet 12 and is held in position by securing screws 15 which pass through. end bosses 16 on the body of the re ceptaele' in customary manner. At opposite corners of the switch chamber 11 are arranged the switch terminals 17, 18, 19 and 20, the first three of which are electrically connected to their respective binding screw terminals 21, 22 and 23, while the switch terminal 20, lying on the same side of the switch chamber as the terminal 18 is electri' cally connected thereto by a strap 24 let into the lower face of the body. The switch is thus of the well understood single pole oneway or three-way type which may beused in connection with a remote control switch connected to the terminal 23. I The switch mechanism arranged within the switch chamber 11 is carried by a frame 25 of novel and simple construction. It comprises a plate of sheet metal lying sub stantially parallelto the upper face of the switch body and having downwardly struck tongues 26, with offset ends 27 which form bearings taking into perforations 28 in the legs of the substantially U-shaped switch bar 29. Between the legs 26 extends a narrow web 30 forming a bearing for the rocker bar 31. The latter is stamped from sheet metal and comprises a bearing aperture 32 with slot opening 33 through which the web 30 may be passed into the bearing aperture.

Similar bearing apertures 34 and 35, at the' ends of the wings 3637 of the rocker bar, are adapted to make detachable connection with the bearing webs 38 of push plates 39 carried by the push buttons 40. In the normal position of the assembled switch it is impossible for the push buttons to become disengaged from the rocker bar, as will be readily understood. To permit the rocker bar 31 to oscillate on its bearing 30, aiid at the same time to guide the rocker against lateral deflection, the frame is slotted at 41 on each side of the bearing web 30, and on the actuation of the mechanism the wings 36, 37, of the. rocker engage said slots. Communicating with these slots at their outer ends are holes 42 through which the push plates 39 of the push buttons 40 pass.

The frame thus forms a bridge longitudinally slotted at 41 and apertured at 42,

the opposite sides being centrally united by the bearing web 30 for the rocker bar, while the depending tongues 26 support the switch bar. The sides of the frame are further united and the whole strengthened by the continuous marginal supporting band or strap 43, the arcuate lateral portions of which are tapped at 44 to IGCBIVG The push button heads. 40 form the stops which limit the extent of oscillation of the rocker bar 31 by impinging against the portions of the frame which surround the holes 42 through which their push plates 39 pass.

he operative connection between therocker bar 31 and switch bar 29 is secured through the switch spring l8, one end of which bears against the raised seat 49 at the closedend of the switch bar, while the upper end of the spring bears against shoulders 50 on the guide pin 51. The stem maintains not only. the web of I, the one hand -30 through its slot bearing 32.

body in order that when the ""hard upon the of the latter passes through the hole 52 in the switch bar spring seat, while its other end is jointed through its web 53 with the bearing aperture 54. at the lower edge of the rocker bar. It is obvious that the upward pressure of the spring 48 constantly 51 in the bearing slot 54, but also the rocker bar 31 itself in engagement with the web Lateral of the parts is prevented on by the lugs 55 of the guide pin which embrace therocker bar, while the latter itself is guided on the slots 41.

The frame as a whole is seated in the displacement switch body 10 on arcuate ledges 56 on oppositesides of the switch chamber and depressed from the upper face of the switch the switch bar 29 may be made relatively short with consequent acceleration of its snap movement from one I position to the other.

Various features of .minor importance may be mentioned. Thus the binding screw terminals have their wire deflecting lugs 57 vent the rotation of the terminal standards binding screw is turned down wire end. It will be noted ing screw 45 for the switch frame as well 1 as being bowed out to permit the insertion of the securing screw. This construction insures the complete insulation of these parts from each other. Channels 59 may be formed in the opposite faces of the switch chamber to accommodate the ends of the spring switch terminals readily accommachinery and may be very expeditiously done by hand. The snap action and general mechanism the circuit.

the guide pin and arrangement of the switch is very eificient'and meet the strictest.requlrements in regard to quick make and quick break of Modifications of details of construction will readily suggest themselves which do not depart from what I claim as my invention.

I claim as my invention 1. Ina push button switch mechanism, a longitudinally slotted fiat frame having a cross web in the plane ,of the frame and a rocker bar pivoted on said web and working in the slots on opposite sides thereof.

2. In a push button switch mechanism, a longitudinally slotted frame having a cross web, bearing lugs offset from said switch frame and lying in a plane passing through said frame substantially at right angles thereto and in line with the cross web,'together with a switch bar pivoted on said lugs.

3. In a push button switch mechanism, a longitudinally slotted frame having a cross web and a rocker bar pivoted on said web and working in the slots on opposite sides thereof, in combination with lugs offset from said frame, a switch bar pivoted on said lugs, and an operative connection between said rocker and switch bar.

4. In a push button switch mechanism, a longitudinally slotted frame having a cross web, a. rocker bar pivoted on said cross web, and working in the slots on opposite sides thereof, push plates pivoted to the opposite ends of said rocker and lying in planes at right angles to that of the rocker and bays communicating with said slots at the outer ends thereof, through which said push plates pass.

a switch bar pivoted thereon, and lateral exforming stops limiting tion of the switch bar.

In a push button switch, a longitudinally slotted framehaving a cross web, a

rocker bar pivoted on said web and workin in the slots on opposite sides thereof,.o1fset 130 E ,fitt ii,

bearing lugs on opposite sides of said frame, a switch bar pivoted thereon, and lateral ex tensions on the opposite sides of the frame. and substantially in the plane of the web forming stops limiting the extent of oscillation oi the switch bar, and means engaging said extensions for securing the frame in position.

8. In a push button switch, a frame comprising a plate having a continuous marginal band, a bridge element extending transversely thereof and longitudinally slotted, a cross web bearing intermediate the ends of said longitudinal slotted, and bearing lugs extending from opposite sides of said bridge.

9. In a push button switch, a frame comprising a plate having a continuous marginal band, a bridge element extending transversely thereof and longitiu'linally slotted, a cross web bearing intermediate the ends of said longitudinal slotting, bays comn'iunicating with the opposite ends of said slot, and bearing lugs extending from opposite sides of said bridge.

10. In a push button switch, a frame comprising a plate having a. continuous marginal band, a transverse bridge element longitudinally slotted and having; an intermediate cross web bearing, open areas on opposite sides oi said bridge and bearing lugs extending), into said areas from opposite sides of the bridge element.

ll. in a push button switch, a frame comprising a plate having a continuous mar ginal i a transverse bridge element, with open areas on each side thereof, bearing lugs oil'set from opposite sides of said bridge element, in combination with an oscillating switch bar pivoted on said lugs and having portions working insaid open areas and connection with the switch bar and an open bearing pivotal connection with the switch frame, and a pair of push buttons having openbearing connections with the rocker bar to operate the latter.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses.

lARL ERIC ANDERSON. Witnesses H. M. Wnu-mnr, (it. W. Goonnroen. 

